Fact sheet
| Game | StackJack |
|---|---|
| Developer and publisher | Lost Island Entertainment, Inc. |
| Platforms | iPhone (iOS 18+), iPad (iPadOS 18+), Mac (macOS 15+) — one universal purchase |
| Release | Coming soon to the App Store (version 2.0). The original StackJack launched in 2012. |
| Price | Free to play. Optional one-time purchases: StackJack Plus (US$4.99), Plus Collector's (US$9.99). |
| Genre | Card puzzle · arcade · daily puzzle |
| Languages | English, Spanish, Brazilian Portuguese |
| Modes | Daily Deal, Weekly Challenge, Run (8 rounds, 4 bosses, 15 Gadgets), Endless, Classic, Zen, local Duels, challenge codes |
| Website | stackjack.app |
| Press contact | press@stackjack.app |
One-line description
StackJack: five hands of 21, one clock — a fast, fair card puzzle for iPhone, iPad and Mac.
Short description
Cards arrive one at a time. Tap a column to play each card and build five stacks as close to 21 as you can without going over, then Stand — every second left on the clock multiplies your score. StackJack adds a Daily Deal for the whole world, Weekly twists, a Run mode with fifteen retro-futurist Gadgets, an Endless mode, local Duels and challenge codes that deal identical decks.
Long description
StackJack first appeared on the App Store in 2012 as a timed mix of solitaire and twenty-one. Version 2.0 is a ground-up rebuild in native SwiftUI for iPhone, iPad and Mac, wrapped in a 1950s atomic-age look from the same studio as Wavy Navy and the Planetary Broadcast Network.
The core is unchanged: five columns, one card at a time, a target total and a clock. Totals are hidden by default, so keeping count is part of the skill. Around it, StackJack 2.0 builds a daily habit and a deeper game: a Daily Deal with one ranked try and a spoiler-free share grid; a Weekly Challenge with two rule twists that change every week; Run, an eight-round mode with boss rounds and a pick-one-of-three Gadget after each round; and Endless, a clockless survival mode where each 21 pays out a perk.
Fairness is the design principle. There's no energy system, nothing purchasable affects play, every Daily deck is checked to be beatable, and after each round the game shows the best total that deck allowed. Challenge codes and local Duels deal identical decks and identical Gadget offers. StackJack has no betting, chips or prizes — it's about speed and arithmetic.
StackJack is free to play. A one-time StackJack Plus purchase removes ads between games forever, and buyers of the original 2012 game get Plus free. The original 2013 rules are included as an option.
Features
- Five hands of 21 at once, against the clock
- Daily Deal and Weekly Challenge — the same for everyone
- Run mode: 8 rounds, 4 boss rules, 15 combinable Gadgets
- Endless mode with column perks
- Local Wi-Fi Duels and shareable challenge codes
- "This deck's best" after every round
- Game Center leaderboards and 20 achievements
- Full keyboard play on iPad and Mac; VoiceOver, Dynamic Type and Reduce Motion support
- 20 original sound effects in a mid-century lounge style
History
StackJack was designed by Christopher Cundey and published by Lost Island Entertainment in 2012, with graphics by Elena Rudenko and additional programming by Shengri Jin. StackJack 2.0 (2026) is a complete rebuild that keeps the original rules as a playable option and reuses its Game Center achievement IDs.
Assets
Download the press kit (ZIP, 6.1 MB)
Includes the app icon (1024 px), key art (2048 px), a 1200×630 social banner, full-resolution screenshots from iPhone, iPad and Mac, and this fact sheet.
You may use these assets for news, reviews, previews and editorial coverage of StackJack. Please don't alter the logo or icon. Apple, App Store and the App Store badge are trademarks of Apple Inc. and are governed by Apple's marketing guidelines.
About Lost Island Entertainment
Lost Island Entertainment is an independent studio making games and stories set in a sunny, slightly unhinged retro-future — including Wavy Navy, Loose Bolts, Fission Girl and the Planetary Broadcast Network. Visit lostisland.com.